Research On The Success Rate Of Serving Table Tennis Players Under Different Exercise Intensities

Objective:In this study,the variation of the teeing success rate of high level table tennis players under different sports intensity is analyzed and studied.The aim of this study is to find out the optimal teeing success rate of high level athletes.Research objects and methods:The research object of the national level high level female athletes in the special table tennis specialty of sports training specialty of Shaanxi Normal University was selected.The experiment is mainly divided into two parts.One part is to create different exercise intensity through the running table,and the other part is to test the success rate of receiving serve.The creation of four different exercise intensities is mainly based on the range of heart rates,setting the ability tests separately,and the level of four different exercise intensities,by using the Bruce platform scheme to create corresponding exercise intensities.According to the subjective fatigue scale(RPE),blood lactic acid,blood sugar,average reaction and other related indicators,the test subjects were determined whether they reached the corresponding exercise intensity,ensuring the effectiveness and authenticity of the experiment.Then the test subjects are required to perform the corresponding test of receiving the serve as soon as possible.The test of receiving the serve is divided into the test of ability and the test of receiving the serve under four different levels of exercise strength.In the case of the ability test,both the initiator and the subject are informed of the rotation and position of each serve.In the test of receiving the serve at four different intensities,the test subject is required to catch the ball according to his own judgment and decision without informing the test subject of the position and rotation of each serve.Each experiment only tested the success rate of the test subject at one level of motion.Results:(1)The success rate of the test test of the test is 83.27%±7.57%.Compared with the ability test,there is no statistical difference in the success rate of receiving serve in the first and third levels of exercise load,and there is a significant difference in the success rate of receiving serve in the second and fourth levels of exercise load(P&It;0.05)(2)After performing a pairing sample T test on the average reaction,it was found that the P values of the average reaction before and after the movement were equal to<GT;0.05;In the third grade,the P value&It when the average reaction before and after;0.05;In the fourth grade,the P value was 0.000&It when the average reaction was before and after;0.01;(3)There is a significant difference in the value of blood lactic acid measured before and after level 1(P&It;0.05)There are extremely significant differences in blood lactic acid at levels 2,3,and 4(P&It;0.01).(4)At levels 1,2,and 4,before and after the test,the blood sugar values P were 0.278,0.929,and 0.885,respectively,and were all greater than 0.05.In the third grade,the blood sugar value P value before and after the test was&It;0.05,there is a significant difference.Research conclusion:(1)When the level of sports intensity reaches level 1 and level 3,there is no significant change in the success rate of the subjects' receiving compared with the normal ability level;When the level of sports intensity reaches level 2 and level 4,the success rate of the subjects' receiving changes significantly compared with the normal ability level,and is significantly lower than the normal level.(2)According to the data processing and analysis results obtained from the test in the experiment,the effects of different levels of exercise intensity on the blood lactic acid,heart rate and average reaction time of the subjects are relatively significant,and the effects on blood glucose are not significant.(3)The body to adapt to the intensity of excessive stage,as well as the physical fatigue will affect to the subjects of skeletal muscle to convey the decision by the execution of brain,complete degree is lower,the body's overall cooperation degree also is bad,will directly cause the participants receiving decision success rate lower,on the other hand,the success rate and normal ability level of decision-making,return change is not obvious.(4)The level of individual lactic acid threshold and the level of maximum oxygen uptake will affect the subjects' motor ability,hair level of skills and retention time of good technology.If the lactate threshold of the individual is high,the maximum oxygen intake is high,the individual aerobic work time is long,the good technical level is maintained for a long time,the success rate is also high;On the contrary,the success rate of receiving will be reduced.